[SPARK-4720][SQL] Remainder should also return null if the divider is 0.

[ueshin]

This is a follow-up of SPARK-4593 (#3443).

[SparkQA]

Test build #24089 has started for PR 3581 at commit c3959d4.

• This patch merges cleanly.

[SparkQA]

Test build #24089 has finished for PR 3581 at commit c3959d4.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Test PASSed.
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Test PASSed.

[chenghao-intel]

Remainder actually supports the fractional type, the previous implementation only support integral type, which is a bug, can you fix that also?

[chenghao-intel]

Oh, forget about it, I just noticed that the i1 actually support the fractional type, too.

[chenghao-intel]

Hmm, may the support the fractional type in i1 is not so correct as its name suggested, probably it's better to add the data type checking here, as we did in Divide

[chenghao-intel]

OK, rem seems only support the integral type, maybe that's why i1 accepts the NumericType instead.

[chenghao-intel]

LGTM +1

[marmbrus]

Thanks! Merged to master.